The way DLSS3 and 3.5 work (though not DLSS4 it seems) is they always guess a previous frame, never a next frame. They always rely on an authentic frame and guess an intermediate frame between prior to it, because they need to know the end state and interpolate backwards from it.

This is described here: en.wikipedia.org/…/Deep_learning_super_sampling#D…

I’m not sure how AMDs frame gen works, is it different?